偶次根式
even root Such as the square root $\sqrt{x}$, its domain requires the radicand (expression under the radical) to be greater than or equal to zero.
CSCA 数学 考试术语
even root Such as the square root $\sqrt{x}$, its domain requires the radicand (expression under the radical) to be greater than or equal to zero.
CSCA 数学 考试术语